Scientists say they can make zero-emission cement – Times of India
PARIS: Researchers on Wednesday said they were a step closer to solving one of the trickiest problems in tackling climate change -- how to keep making cement despite its enormous carbon footprint.In a world first, engineers from Britain's University of Cambridge have shown that cement can be recycled without the same steep cost to the environment as making it from scratch.Cement binds concrete together but the whitish powder is highly carbon-intensive to produce, with the sector generating more than triple the emissions of global air travel.Demand for concrete -- already the most widely used construction material on Earth -- is soaring, but the notoriously polluting industry has struggled to produce it in a less harmful way to the climate.The team at Cambridge believes it has a solution...
